helloc.c

windos自带的rpc通信

/****************************************************************************
                   Microsoft RPC Version 2.0
           Copyright Microsoft Corp. 1992, 1993, 1994- 1996
                       Hello Example

    FILE:       helloc.c

    USAGE:      helloc  -n network_address
                        -p protocol_sequence
                        -e endpoint
                        -o options
                        -s string_displayed_on_server

    PURPOSE:    Client side of RPC distributed application

    FUNCTIONS:  main() - binds to server and calls remote procedure

    COMMENTS:   This version of the distributed application that
                prints "hello, world" (or other string) on the server
                features a client that manages its connection to the
                server. It uses the binding handle hello_IfHandle,
                defined in the file hello.h.

****************************************************************************/

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include "hello.h"    // header file generated by MIDL compiler

void Usage(char * pszProgramName)
{
    fprintf(stderr, "Usage:  %s\n", pszProgramName);
    fprintf(stderr, " -p protocol_sequence\n");
    fprintf(stderr, " -n network_address\n");
    fprintf(stderr, " -e endpoint\n");
    fprintf(stderr, " -o options\n");
    fprintf(stderr, " -s string\n");
    exit(1);
}

void _CRTAPI1 main(int argc, char **argv)
{
    RPC_STATUS status;
    unsigned char * pszUuid             = NULL;
    unsigned char * pszProtocolSequence = "ncacn_np";
    unsigned char * pszNetworkAddress   = NULL;
    unsigned char * pszEndpoint         = "\\pipe\\hello";
    unsigned char * pszOptions          = NULL;
    unsigned char * pszStringBinding    = NULL;
    unsigned char * pszString           = "hello, world";
    unsigned long ulCode;
    int i;

    /* allow the user to override settings with command line switches */
    for (i = 1; i < argc; i++) {
        if ((*argv[i] == '-') || (*argv[i] == '/')) {
            switch (tolower(*(argv[i]+1))) {
            case 'p':  // protocol sequence
                pszProtocolSequence = argv[++i];
                break;
            case 'n':  // network address
                pszNetworkAddress = argv[++i];
                break;
            case 'e':  // endpoint
                pszEndpoint = argv[++i];
                break;
            case 'o':
                pszOptions = argv[++i];
                break;
            case 's':
                pszString = argv[++i];
                break;
            case 'h':
            case '?':
            default:
                Usage(argv[0]);
            }
        }
        else
            Usage(argv[0]);
    }

    /* Use a convenience function to concatenate the elements of */
    /* the string binding into the proper sequence.              */
    status = RpcStringBindingCompose(pszUuid,
                                     pszProtocolSequence,
                                     pszNetworkAddress,
                                     pszEndpoint,
                                     pszOptions,
                                     &pszStringBinding);
    printf("RpcStringBindingCompose returned 0x%x\n", status);
    printf("pszStringBinding = %s\n", pszStringBinding);
    if (status) {
        exit(status);
    }

    /* Set the binding handle that will be used to bind to the server. */
    status = RpcBindingFromStringBinding(pszStringBinding,
                                         &hello_IfHandle);
    printf("RpcBindingFromStringBinding returned 0x%x\n", status);
    if (status) {
        exit(status);
    }

    printf("Calling the remote procedure 'HelloProc'\n");
    printf("Print the string '%s' on the server\n", pszString);

    RpcTryExcept {
        HelloProc(pszString);  // make call with user message
        printf("Calling the remote procedure 'Shutdown'\n");
        Shutdown();  // shut down the server side
    }
    RpcExcept(1) {
        ulCode = RpcExceptionCode();
        printf("Runtime reported exception 0x%lx = %ld\n", ulCode, ulCode);
    }
    RpcEndExcept

    /*  The calls to the remote procedures are complete. */
    /*  Free the string and the binding handle           */
    status = RpcStringFree(&pszStringBinding);  // remote calls done; unbind
    printf("RpcStringFree returned 0x%x\n", status);
    if (status) {
        exit(status);
    }

    status = RpcBindingFree(&hello_IfHandle);  // remote calls done; unbind
    printf("RpcBindingFree returned 0x%x\n", status);
    if (status) {
        exit(status);
    }

    exit(0);

}  // end main()


/*********************************************************************/
/*                 MIDL allocate and free                            */
/*********************************************************************/

void  __RPC_FAR * __RPC_USER midl_user_allocate(size_t len)
{
    return(malloc(len));
}

void __RPC_USER midl_user_free(void __RPC_FAR * ptr)
{
    free(ptr);
}

/* end file helloc.c */